Scissors



cf R. STORZ.

SCISSORS. APPLICATION men SEPT. 12. 1919.

Patentd May 11,1920;

WITNESSES A TTORMEYS 1 any BEQGKEYN, KEV? YORK ilpgs iica'tion filed.Sep temocr 1T0 (1Z5 whom it may com-em:

Be it knows that I QHARLES R. S' oez, a citizen oi the Uni/ed see-es,and dent of the city oi? Newli' ork, borough of BlOOlilBTi, in thecounty ofl'iings and State of New York, have inventecla anci Emproceclissors, of which the foilowing a description.

My invention relieves 0 scissors and 15 adapted for embodiment inscissors gGi 161"- it having particular arlmntages when embotlied insurg'col *cissors'. v i

The general. object of the invention is to- P provide a scissors withremovable costing blades and z practical "means for securing theblaclesimmovsbly in position on the scissors enkifproviding for the convenientI sbiirpenings, the ordinary scissors lOSEES its shape which is adistinct detriment in :Ehe case of surgical scissors. e130, W theProvision of separate blames the main members of the scissors maybemacie of restless o1 stsinlesssteel which is an important coneracionin the cas of surgical scissors .e-"uiiing repeated}; and sieriiizr-"iit well known on e other hand LlQSS steel does not le itself "co ihomas-- g members. ihe nature of my invention and iiie mlvantages willmore clearly appear from. the specific description following.

Reference is to be haci to the accompanyi112" drawings forming 21 partof this 3ci- H I I Sfllfi, clemeni will bear laterally against saidficetion, it being unclvs'toocl that the 6i. 0

ing's are merely illustrative of one example.

of the invention.

Figure 1 is a pier: viqw o sors proi'icled with my remove.-

Fig. 2 is a plan view of the of one of the scissors zoembers with theremovable blatie thereon;

Fig. 3 is View similar blade omit-tecl;

to Fig. '2 with the Specifioeciozi of Letters 3921mm;

Boris E's. 323,232,

4: is o pies] view of the'removsbie i isle cross section or. iiiie 5 5,

In producing a practical embodies-ens of my invention. the handledscissors members of any desired form are pivoted by. an approved means,thepi'vot means shown heing'knoo ii' as the French pivotsnoiinv'oiving-a' headed. send 11 on one me mber onoi a' correspondinglyshaped opening 11' .in the other member so that the members may bedisconnected when in a particular angular relation. o

' T he clebaciiabie blade 12 provided for each member 10 presents a hole13 to'accommorhite the stud 11. Each member 10 at the blade seo't hasundercut recesses 14,15: therein at different distances from the. endand blade 12 has corresoondirigly inclined congiies 16, 17. Theundercutting of the recesses and the angularityof the respective tonguesie I? are reversed. Said tongues serve to snugly fasten the blacle inposition by entering the froni tongue 16 in the front underc recess 1iaiicl then moving the blade 12 in its own plane laterally until thesecond tongue snaps into its-recess 15. in order to further provicieagainst the possible looseness of the blade and to positively guardagainst its displacement, I provide a inrnoble locking element 18 oneach member 10 at the blade seat and rearward of the rece; saidelementsbeing flush with or within the planes of said seats, each ofsaid elements being swivelecl and having head at one side or otherwiseformed. to give it on eccentric or cam form. Adjacent $0 each element 18and complementary to the hole-in which it (urns is a recess 1.9 in "theblade seat sairl recess being adapted to receive :1 lug 20 on the blaclel2 s0'thaiwhen said log is position and element 18 turned.

he blade in position as Well. as permitting.

desired cutting edge and similarly, complete freedom of choice ispermitted in the selection of materials for the handle members that willnot be impaired by the usual process of manufacturing scissors.

' The blades or cutter elements 11-2 are re sili'ent so that they willyield to bending pressure for permitting the tongues 16, 17 to beentered into place in recesses 11-, 1.5 by a turning movement of theblade in its general plane and while the rear end is flexed upwardly sothat the rear tongue 20 clears screw 18 in the entering oi the tongues16, 17, after which the blade resumes its flat unfiexed form a ainst itsseat. the

tongue 20 snapping downwardly into its recess 19. It will be observedthat the blades 12 and the seats therefor on the integral cuttingmembers forming the front end of the scissors beyond. the pivot overlieeach other so'that 'a portion of one blade always lies over the other,regardless of the angular relation of the scissors members in thecutting action or in other words that the blades lie over or againsteach other during the "IDOVGIHGIICS of the blades within the range ofthe cutting so that the overlappingrelation of the blades at all timesis such that the one blade holds the other against any teinlenc to liftfrom its seat, the arrangement making it necessary L0 swing the scissorsmembers through an are beyond the largest arc through which they move incutting before. 2 the blades can release themselves or be re- 35'leased.

I would state in conclusion that while the illustrated exampleconstitutes a practical embodiment of my invention. I do not limitmyself strictly to the mechanical details herein illustrated, sincemanifestly the same can be considerably varied without departurefrom'the spirit of the inventi n as defined in the appended claims.

Having thus described my invention, 1 claim:

1. A scissors presenting cutter seats having undercut recesses thereinat different distances from the front ends of said seats, and removablecutter elements adapted to said seats and having inclined tonguesreceivable in said recesses. f

2. A. scissors presenting cutter seats each having an undercut recess.and removable 'cutter elements adapted to said seats and havingtransversely inclined tongues receivable in said recesses.

3. A scissors presenting cutter seats having therein recesses atdifferent distances from the front ends of the seats, and reinentsadapted. to said seats and having revcrsely inclined tongues receivablein said recesses. I

it. A. scissors presenting cutter seats having therein recessesatdifferent distances from the front ends of the seats, and reverselyundercut, and remo *ab'le cutter elements adapted to said fseats andhaving reversely inclined tonguesreceivable in said recesses, saidcutter elements being resilient.

o. A scissors presenting cutter seats each having a recess therein, aturnable locking element on each member at the recess, and removableblades adapted to said seats and each having a tongue receivable in theadjacent recess, said tongues being engageahle by said locking elementsby turning the latter.

A 'issors presenting cutter seats each having a recess therein, a"turnable locking tlBlllPIlt-OD- each member at the recess, saidelements having cam surfaces, and removable blades adapted to said seatsand each having a lIOllgllB receivable in the adjacent recess, saidtongues being engageable by said cam surfaces by the turning oi saidlocking elements. l

T. A scissors presenting cutter seats having undercut recesses thereinat different distances from the trout ends of said seats. removablecutter elements adapted to said seats and having inclinedtonguesreceivable in said recesses, and a turnabic locking element on eachinemi-ier, there being a recess in said member at said locking element.and said cutter elements each having a tongue receivable in that recessadjacent to the turnable element to be cugageable'by said turnablcelement.

A scissors including members presenting cutter seats at the opposedfaces thereof, each seat having an undercut recess therein,removablecutter elements adapted to said seats and having each an inclined tonguereceivable in the recesses of the re spective seats, a turnable lockingelement on each member at the seat thereof. said seats having each asecond recess directly adjacent to the respective locking elements.

and said cutter elements having each a secoud tongue receivable in thelast-mentioned recesses of the respective seats, said locking elementsbeing adapted by the turning there of to engage thesecoml-mentionedtongues when the latter are in the last-mentionedrecesses.

CHARLES R. STORZ.

